Experimental cross platform utf8 support.

src/guecs/ui.cpp

@@ -3,6 +3,7 @@
 #include <cassert>
 #include <fmt/core.h>
 #include <iostream>
+#include <utf8.h>
 
 namespace guecs {
   using std::make_shared;
@@ -237,7 +238,14 @@ namespace guecs {
   }
 
   wstring to_wstring(const string& str) {
-    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> $converter;
-    return $converter.from_bytes(str);
+    std::wstring result = L"";
+
+    try {
+      utf8::utf8to32(str.begin(), str.end(), std::back_inserter(result));
+    } catch(const utf8::exception& e) {
+      std::cerr << e.what() << std::endl;
+    }
+
+    return result;
   }
 }